However, the issue I'm having is that the main section of the forum still has black in the top and bottom rounded corners. I have been searching high and low for a simple fix for this, but I'm stumped. So, being a novice, I've come to the SMF community for assistance.

How can I simply change up the corners to be grey, like the background color outside of the content section? If I can't do that, I'd be fine with making it white.